Support <think /> tags from R1

[Patrick-Erichsen]

Before submitting your bug report

• I believe this is a bug. I'll try to join the Continue Discord for questions
• I'm not able to find an open issue that reports the same bug
• I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

Description

DeepSeek-R1 model produces <think /> tags that we can parse and render in a nicer UI than the default Think... text that we use for reasoning models like o1 that don't expose their reasoning steps.

Example implementation from chat.deepseek.com

To reproduce

No response

Log output

[getfit-us]

Is this already being worked on, to remove the think from the chat window, (show hide) also make sure its not being sent back into the regular context window for follow up messages?

[germankrause]

#3840 Waiting for review